His role in the Melbourne gangland killings — a prolonged underworld conflict that claimed dozens of lives across the early 2000s — positioned him as both orchestrator and, ultimately, casualty. Williams operated through financial leverage, paying associates to carry out contract killings on his behalf, a method that expanded his reach while keeping distance from the violence itself. The war he helped fuel became one of Australia's most extensively documented organized crime episodes, later dramatized in the television series Underbelly.

A Catholic priest who rose to lead a fascist client state, Tiso presided over a government that collaborated actively in the deportation of Slovak Jews to Nazi extermination camps — a process his administration helped organize and, at times, finance. His case remains historically striking for the convergence of religious authority and political complicity, and for the degree to which the Slovak state under his leadership acted not merely under compulsion but with initiative. He was tried and executed after the war's end, though debates over his legacy persisted for decades in Slovakia.